Face mask



FIG. 1 is a perspective front view of a face mask in environmental conditions;

FIG. 2 shows a top view thereof;

FIG. 3 shows a front view thereof;

FIG. 4 shows a right side view thereof; and,

FIG. 5 shows a left side view thereof.

The broken lines immediately adjacent the shaded areas of the face mask represent the bounds of the claimed design while the broken lines outline of a person's head are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design. 

CLAIM The ornamental design for a face mask, as shown and described. 